chore: consolidate firepower profiles

consolidating cisco-firepower-asa into cisco-firepower
adding all sysobjectid's for firepower devices found in the CISCO-PRODUCTS-MIB
building failover logic for memory to grab the available metric on the device (for devices that don't support the CISCO-FIREPOWER-SM-MIB
Adding the CISCO-ENTITY-SENSOR-MIB to collect hardware statistics

kentik / snmp-profiles